noun (n)

• a positive motivational influence(noun.motive)

  Synonym:
  incentive, motivator
  Antonym:
  deterrence, disincentive
  

  source: wordnet30
• act of bringing about a desired result(noun.act)

  Example:
  Inducement of sleep.
  

  Synonym:
  inducing
  

  source: wordnet30
• The act of inducing, or the state of being induced.(noun)

  source: webster1913